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A comparative study of approximate symmetry and approximate homotopy symmetry to a class of perturbed nonlinear wave equations 期刊论文
NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS, 2011, 卷号: 74, 期号: 13, 页码: 4300-4318
作者:  Zhang, Zhiyong;  Chen, Yufu
收藏  |  浏览/下载：132/0  |  提交时间：2018/07/30
Approximate symmetry  Optimal system  Reduction  Approximate homotopy symmetry  
Second-order approximate symmetry classification and optimal system of a class of perturbed nonlinear wave equations 期刊论文
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, 2011, 卷号: 16, 期号: 7, 页码: 2709-2719
作者:  Zhang, Zhiyong;  Gao, Ben;  Chen, Yufu
收藏  |  浏览/下载：131/0  |  提交时间：2018/07/30
Approximate symmetry  Lie reduction  Approximate invariant solution  Optimal system  
Three types of generalized Kadomtsev-Petviashvili equations arising from baroclinic potential vorticity equation 期刊论文
CHINESE PHYSICS B, 2010, 卷号: 19, 期号: 2, 页码: 8
作者:  Zhang Huan-Ping;  Li Biao;  Chen Yong;  Huang Fei
收藏  |  浏览/下载：139/0  |  提交时间：2018/07/30
baroclinic potential vorticity equation  generalized Kadomtsev-Petviashvili equation  symmetry groups  approximate solution